- Associated Press - Saturday, July 19, 2014

PITTSBURGH (AP) - Nobody plays more one-run games than the Pittsburgh Pirates.

No wonder they are starting to look so comfortable when things get tight.

Jordy Mercer doubled home Neil Walker with one out in the bottom of the 11th inning to lift the Pirates to a 3-2 win over the Colorado Rockies on Saturday night.

Pittsburgh improved to 23-17 in one-run games this season, including 16-8 at home.

“We feel like we’re never out of anything, especially in this ballpark,” Mercer said. “We just kind of feed off each other and string together some good at bats, and good things happen.”

Walker led off the inning with a single against Colorado’s Chad Bettis (0-2), moved to second on a sacrifice bunt, and scored one batter later when Mercer hit a drive deep into the gap in left-center.

“He’s capable of driving in runs,” Pirates manager Clint Hurdle said of Mercer, who is batting .358 in July. “He’s getting more confidence every time he takes the field. Nights like tonight, when you can end it like that in a walk-off, just add to that.”

Jared Hughes (5-2) earned the win after escaping a two-on, one-out jam in the 11th by snagging a line drive from Charlie Blackmon and turning it into a double play.

“I threw the pitch, it was going to where I wanted it to, and he did an excellent job of getting to it and hitting a line drive. I did not see it,” Hughes said. “I feel like it just went right into my glove.”

Walker went 3 for 5 with two runs scored for the Pirates, who moved to within 2.5 games of first-place Milwaukee and St. Louis in the crowded NL Central.

Carlos Gonzalez hit a two-run homer for the Rockies, who lost All-Star shortstop Troy Tulowitzki in the fourth inning to a left thigh cramp.

Tulowitzki, who leads the majors in batting average (.340) and runs (71), hit a slow roller to shortstop in the fourth against Pittsburgh starter Charlie Morton and grabbed his leg while nearing first base. He walked gingerly to the dugout before being replaced by Josh Rutledge.

“Nothing serious,” Tulowitzki said. “We’ll see how I wake up (Sunday). The good news is I don’t think I tore anything or did anything to where I’m going to miss an extended period of time.”

Colorado starter Brett Anderson, acquired in a trade from Oakland last December following a humbling season in which he went from Opening Day starter to the bullpen, spent seven innings keeping the Pirates off balance with a dizzying array of breaking balls.

The left-hander allowed one run and struck out eight with just one walk, his only flub being consecutive doubles by Walker and Gaby Sanchez in the fourth that put Pittsburgh in front.

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